Annual report pursuant to Section 13 and 15(d)

Noncontrolling Interests In Subsidiaries (Changes In Noncontrolling Interests Of Subsidiaries) (Details)

v3.10.0.1
Noncontrolling Interests In Subsidiaries (Changes In Noncontrolling Interests Of Subsidiaries) (Details) - shares
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Noncontrolling Interests In Subsidiaries [Abstract]      
Balance, Beginning, Common Units 10,438,855 10,488,105 10,516,844
Redemption of common units for shares of common stock (264,570) (148,662) (28,739)
Issuance of units, Common Units 99,412
Balance, Ending, Common Units 10,174,285 10,438,855 10,488,105
Balance, Beginning, LTIP Units 1,230,877 657,373
Issuance of units, LTIP Units 864,024 578,323 657,373
Cancellation of units (332,731) (4,819)  
Balance, Ending, LTIP Units 1,762,170 1,230,877 657,373